Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683253 | Disk recording medium and video-song accompaniment apparatus adopting the same | Dong-Jin Park | 1997-11-04 |
| 5633688 | Image superimposing apparatus for superimposing the encoded color televison signal with the external composite video signal | Hae-min Choi, Bong-hun Song | 1997-05-27 |